Malware Analysis Report

2024-10-24 18:41

Sample ID 240920-b96cfatcnl
Target efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af.exe
SHA256 efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af
Tags
stealc rave discovery evasion stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af

Threat Level: Known bad

The file efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af.exe was found to be: Known bad.

Malicious Activity Summary

stealc rave discovery evasion stealer

Stealc

Identifies VirtualBox via ACPI registry values (likely anti-VM)

Checks BIOS information in registry

Identifies Wine through registry keys

Suspicious use of NtSetInformationThreadHideFromDebugger

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-20 01:51

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-20 01:51

Reported

2024-09-20 01:54

Platform

win7-20240903-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af.exe"

Signatures

Stealc

stealer stealc

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af.exe

"C:\Users\Admin\AppData\Local\Temp\efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af.exe"

Network

Country Destination Domain Proto
RU 185.215.113.103:80 185.215.113.103 tcp

Files

memory/2744-0-0x0000000001190000-0x0000000001671000-memory.dmp

memory/2744-1-0x00000000778B0000-0x00000000778B2000-memory.dmp

memory/2744-2-0x0000000001191000-0x00000000011A5000-memory.dmp

memory/2744-3-0x0000000001190000-0x0000000001671000-memory.dmp

memory/2744-5-0x0000000001190000-0x0000000001671000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-20 01:51

Reported

2024-09-20 01:54

Platform

win10v2004-20240802-en

Max time kernel

94s

Max time network

100s

Command Line

"C:\Users\Admin\AppData\Local\Temp\efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af.exe"

Signatures

Stealc

stealer stealc

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af.exe

"C:\Users\Admin\AppData\Local\Temp\efafd247cd37dd6d00d4bf2b719ae548c8fb191b90e0925b5273458ea9e557af.exe"

Network

Country Destination Domain Proto
RU 185.215.113.103:80 185.215.113.103 tcp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 103.113.215.185.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/3412-0-0x0000000000EC0000-0x00000000013A1000-memory.dmp

memory/3412-1-0x00000000770A4000-0x00000000770A6000-memory.dmp

memory/3412-2-0x0000000000EC1000-0x0000000000ED5000-memory.dmp

memory/3412-3-0x0000000000EC0000-0x00000000013A1000-memory.dmp

memory/3412-4-0x0000000000EC0000-0x00000000013A1000-memory.dmp